Speciation, which leads to diversity among species through natural selection occurs when
A. organisms develop characteristics that mimics traits of completely different species.
B. species experience change within their lineage and develop new characteristics
C. species interact with other species in an ecosystem and develop similar traits to each other.
D. once similar species are no longer able to mate and produce fertile offspring.

During the day, plants produce by splitting water molecules in the light-dependent reactions of photosynthesis. at the same time, plants use cellular respiration to produce some of the needed by the light-independent reactions to make sugars. during the night, plants produce because takes place.

Where does the information about where each transcription factor binds originate?

Even though the ostrich is a flightless bird, ostriches still possess wings that stretch approximately two meters across when fully extended. scientists speculate that when dinosaurs became extinct, some of the birds that lived during that time became land dwellers since they were able to consume the food that the dinosaurs once ate. over time, these species grew larger and heavier. eventually, the ostrich species became too big to fly. the wings found on ostriches are known as a. analogous structures. b. homologous structures. c. vestigial structures. d. symmetrical structures.